/* Adapter to libisoburn, libisofs and libburn for xorriso,
   a command line oriented batch and dialog tool which creates, loads,
   manipulates and burns ISO 9660 filesystem images.

   Copyright 2007-2008 Thomas Schmitt, <scdbackup@gmx.net>

   Provided under GPL version 2.
*/

#include <ctype.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>


/* ------------------------------------------------------------------------ */


/* The library which does the ISO 9660 / RockRidge manipulations */
#include <libisofs/libisofs.h>

/* The library which does MMC optical drive operations */
#include <libburn/libburn.h>

/* The library which enhances overwriteable media with ISO 9660 multi-session
   capabilities via the method invented by Andy Polyakov for growisofs */
#include <libisoburn/libisoburn.h>

/* The official xorriso options API. "No shortcuts" */
#include "xorriso.h"

/* The inner description of XorrisO */
#include "xorriso_private.h"

/* The inner isofs- and burn-library interface */
#include "xorrisoburn.h"


int Xorriso_pacifier_loop(struct XorrisO *xorriso, struct burn_drive *drive,
                          int flag);


/* ------------------------------------------------------------------------ */


int Xorriso_startup_libraries(struct XorrisO *xorriso, int flag)
{
 int ret;
 char *handler_prefix= NULL;
 char *queue_sev, *print_sev;

 sprintf(xorriso->info_text, "Starting up libraries ...\n");
 Xorriso_info(xorriso, 0);

 handler_prefix= calloc(strlen(xorriso->progname)+3+1, 1);
 if(handler_prefix==NULL) {
   sprintf(xorriso->info_text,
           "Cannot allocate memory for initializing libraries");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(-1);
 }
 ret= isoburn_initialize();
 if(ret==0) {
   sprintf(xorriso->info_text, "Cannot initialize libraries");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   free(handler_prefix);
   return(0);
 }
 xorriso->libs_are_started= 1;

 queue_sev= "DEBUG";
 if(xorriso->library_msg_direct_print) {

   /* >>> need option for controlling this in XorrisO.
          See also Xorriso_msgs_submit */;

   print_sev= xorriso->report_about_text;
 } else
   print_sev= "NEVER";
 iso_msgs_set_severities(queue_sev, print_sev, "libisofs : ");
 burn_msgs_set_severities(queue_sev, print_sev, "libburn : ");

 /* ??? >>> do we want united queues ? */
 /* burn_set_messenger(iso_get_messenger()); */

 sprintf(handler_prefix, "%s : ", xorriso->progname);
 burn_set_signal_handling(handler_prefix, NULL, 0);
 
 Xorriso_process_msg_queues(xorriso,0);
 sprintf(xorriso->info_text, "Library startup done.\n");
 Xorriso_info(xorriso, 0);
 free(handler_prefix);
 return(1);
}


int Xorriso_shutdown_libraries(struct XorrisO *xorriso, int flag)
{
 if(xorriso->libs_are_started==0)
   return(0);
 isoburn_finish();
 return(1);
}


/* @param flag bit1= obtain outdrive, else indrive */
int Xorriso_get_drive_handles(struct XorrisO *xorriso,
                              struct burn_drive_info **dinfo,
                              struct burn_drive **drive,
                              char *attempt, int flag)
{
 if(flag&2)
   *dinfo= (struct burn_drive_info *) xorriso->out_drive_handle;
 else
   *dinfo= (struct burn_drive_info *) xorriso->in_drive_handle;
 if(*dinfo==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text, "No %s drive aquired %s",
           (flag&2 ? "output" : "input"), attempt);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 *drive= (*dinfo)[0].drive;
 return((*drive)!=NULL);
}


int Xorriso_create_empty_iso(struct XorrisO *xorriso, int flag)
{
 int ret;
 struct iso_volset *volset;
 struct isoburn_read_opts ropts;
 struct burn_drive_info *dinfo= NULL;
 struct burn_drive *drive= NULL;

 if(xorriso->out_drive_handle != NULL) {
   ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                  "on attempt to attach volset to drive", 2);
   if(ret<=0)
     return(ret);
 }
 if(xorriso->in_volset_handle!=NULL) {
   iso_volset_free((struct iso_volset *) xorriso->in_volset_handle);
   xorriso->in_volset_handle= NULL;
   xorriso->volset_change_pending= 0;
 }
 memset(&ropts, sizeof(ropts), 0);
 ropts.pretend_blank= 1;
 ret= isoburn_read_volset(drive, &ropts, &volset);
 Xorriso_process_msg_queues(xorriso,0);
 if(ret<=0) {
   sprintf(xorriso->info_text, "Failed to create new empty ISO image object");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(-1);
 }
 xorriso->in_volset_handle= volset;
 xorriso->volset_change_pending= 0;
 return(1);
}


/* @param flag bit0=aquire as isoburn input drive
               bit1=aquire as libburn output drive (as isoburn drive if bit0)
   @return <=0 failure , 1= ok
           2=success, but not writeable with bit1
           3=success, but not blank and not ISO with bit0
*/
int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
{
 int ret, hret, not_writeable= 0;
 struct burn_drive_info *dinfo= NULL, *out_dinfo, *in_dinfo;
 struct burn_drive *drive, *out_drive, *in_drive;
 enum burn_disc_status state;
 struct iso_volset *volset;
 struct isoburn_read_opts ropts;

 if((flag&3)==0) { 
   sprintf(xorriso->info_text, 
         "XORRISOBURN program error : Xorriso_aquire_drive bit0+bit1 not set");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(0);
 }
 ret= Xorriso_give_up_drive(xorriso, (flag&3)|8);
 if(ret<=0)
   return(ret);

 if((flag&3)==1 && xorriso->out_drive_handle!=NULL) {
   ret= Xorriso_get_drive_handles(xorriso, &out_dinfo, &out_drive,
                         "on attempt to compare new indev with outdev", 2);
   if(ret<=0)
     goto ex;
   ret= burn_drive_equals_adr(out_drive, adr, 1);
   if(ret==1)
     dinfo= out_dinfo;
 } else if((flag&3)==2 && xorriso->in_drive_handle!=NULL) {
   ret= Xorriso_get_drive_handles(xorriso, &in_dinfo, &in_drive,
                         "on attempt to compare new indev with outdev", 0);
   if(ret<=0)
     goto ex;
   ret= burn_drive_equals_adr(in_drive, adr, 1);
   if(ret==1)
     dinfo= in_dinfo;
 }

 if(dinfo==NULL) {
   ret= isoburn_drive_scan_and_grab(&dinfo, adr, 1);
   Xorriso_process_msg_queues(xorriso,0);
   if(ret<=0) {
     sprintf(xorriso->info_text,"Cannot aquire drive '%s'", adr); 
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     return(0);
   }
 }
 drive= dinfo[0].drive;
 state= isoburn_disc_get_status(drive);
 Xorriso_process_msg_queues(xorriso,0);

 if(flag&2) {
   xorriso->out_drive_handle= dinfo;
   if(Sfile_str(xorriso->outdev, adr, 0)<=0)
     return(-1);
   if(state != BURN_DISC_BLANK && state != BURN_DISC_APPENDABLE) {
     sprintf(xorriso->info_text, "Disc status unsuitable for writing");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
     not_writeable= 1;
   }
 }
 if(flag&1) {
   xorriso->in_drive_handle= dinfo;
   if(Sfile_str(xorriso->indev, adr, 0)<=0)
     return(-1);
 } else if(flag&2) {
   if(xorriso->in_volset_handle==NULL) {
     /* No volume loaded: create empty one */
     ret= Xorriso_create_empty_iso(xorriso, 0);
     if(ret<=0)
       return(ret);
   } else {
     iso_volset_ref(xorriso->in_volset_handle);
     ret= isoburn_attach_volset(drive,
                              (struct iso_volset *) xorriso->in_volset_handle);
     if(ret<=0) {
       sprintf(xorriso->info_text,
               "Failed to attach ISO image object to outdev");
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
       return(-1);
     }
   }
   Xorriso_toc(xorriso, 1|2);
   return(1+not_writeable);
 }

 if(xorriso->in_volset_handle!=NULL)
   iso_volset_free((struct iso_volset *) xorriso->in_volset_handle);
 xorriso->in_volset_handle= NULL;

 /* check for invalid state */
 if(state != BURN_DISC_BLANK && state != BURN_DISC_APPENDABLE &&
    state != BURN_DISC_FULL) {
   sprintf(xorriso->info_text,
           "Disc status not blank and unsuitable for reading");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 /* fill read opts */ 
 memset(&ropts, sizeof(ropts), 0);
 ropts.norock= 0;
 ropts.nojoliet= 0;
 ropts.preferjoliet= 0;
 ropts.uid= 0;
 ropts.gid= 0;
 ropts.mode= 0555;
 ropts.pretend_blank= 0;

 if(isoburn_read_volset(drive, &ropts, &volset) <= 0) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,"Cannot read ISO image volset");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   ret= 3; goto ex;
 }
 xorriso->in_volset_handle= volset;
 if(xorriso->out_drive_handle != NULL &&
    xorriso->out_drive_handle != xorriso->in_drive_handle) {
   ret= Xorriso_get_drive_handles(xorriso, &out_dinfo, &out_drive,
                         "on attempt to attach ISO image volset to outdev", 2);
   if(ret<=0)
     goto ex;
   iso_volset_ref(xorriso->in_volset_handle);
   isoburn_attach_volset(out_drive, xorriso->in_volset_handle);
 }
 Xorriso_process_msg_queues(xorriso,0);
 Xorriso_toc(xorriso, 1);
 ret= 1+not_writeable;
ex:
 if(ret<=0) {
   hret= Xorriso_give_up_drive(xorriso, flag&3);
   if(hret<ret)
     ret= hret;
 }
 Xorriso_process_msg_queues(xorriso,0);
 return(ret);
}


/* @param flag bit0=input drive
               bit1=output drive
               bit2=eject
               bit3=no info message or toc
*/
int Xorriso_give_up_drive(struct XorrisO *xorriso, int flag)
{
 int in_is_out_too, ret;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 
 in_is_out_too= (xorriso->in_drive_handle == xorriso->out_drive_handle);
   
 if((flag&1) && xorriso->in_drive_handle != NULL) {
   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                             "on attempt to give up drive", 0);

   if(!in_is_out_too) {
     if(drive!=NULL && !in_is_out_too)
       isoburn_drive_release(drive,!!(flag&4));
     if(dinfo!=NULL && !in_is_out_too)
       burn_drive_info_free(dinfo);
   }
   xorriso->in_drive_handle= NULL;
   xorriso->indev[0]= 0;

   if(xorriso->in_volset_handle!=NULL)
     iso_volset_free((struct iso_volset *) xorriso->in_volset_handle);
   xorriso->in_volset_handle= NULL;
   xorriso->volset_change_pending= 0;

   in_is_out_too= 0;
 }
 if((flag&2) && xorriso->out_drive_handle!=NULL) {
   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                             "on attempt to give drive up", 2);
   if(!in_is_out_too) {
     if(drive!=NULL)
       isoburn_drive_release(drive,!!(flag&4));
     if(dinfo!=NULL)
       burn_drive_info_free(dinfo);
   }
   xorriso->out_drive_handle= NULL;
   xorriso->outdev[0]= 0;
 } else if((flag&1) && xorriso->out_drive_handle!=NULL) {
   ret= Xorriso_create_empty_iso(xorriso, 0);
   if(ret<=0)
     return(ret);
   if(!(flag&8)) {
     sprintf(xorriso->info_text,
             "Only the output drive remains. Created empty ISO image.\n");
     Xorriso_info(xorriso, 0);
     Xorriso_toc(xorriso, 1|2);
   }
 }
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_make_write_options(
        struct XorrisO *xorriso, struct burn_drive *drive,
        struct burn_write_opts **burn_options, int flag)
{
 *burn_options= burn_write_opts_new(drive);
 if(*burn_options==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,"Cannot allocate option set");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 burn_write_opts_set_simulate(*burn_options, !!xorriso->do_dummy);
 burn_write_opts_set_multi(*burn_options, !xorriso->do_close);
 burn_drive_set_speed(drive, xorriso->speed, xorriso->speed);
 burn_write_opts_set_underrun_proof(*burn_options, 1);
 return(1);
}


/* @param flag bit0= do not write but only prepare and return size in sectors
*/
int Xorriso_write_session(struct XorrisO *xorriso, int flag)
{
 int ret, media_space;
 struct isoburn_source_opts sopts;
 struct burn_drive_info *dinfo, *source_dinfo;
 struct burn_drive *drive, *source_drive;
 struct burn_disc *disc= NULL;
 struct burn_write_opts *burn_options;
 off_t readcounter= 0,writecounter= 0;
 int num_sessions= 0, num_tracks= 0;
 struct burn_session **sessions;
 struct burn_track **tracks;
 enum burn_disc_status s;

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to write", 2);
 if(ret<=0)
   return(0);

 sopts.level= 2;
 sopts.flags= ECMA119_ROCKRIDGE;
 if(xorriso->do_joliet)
   sopts.flags|= ECMA119_JOLIET;
 sopts.relaxed_constraints= 0;
 sopts.copy_eltorito= 1;
 sopts.no_cache_inodes= 0;
 sopts.sort_files= 1;
 sopts.default_mode= 1;
 sopts.replace_dir_mode= xorriso->do_global_mode;
 sopts.dir_mode= xorriso->global_dir_mode;
 sopts.replace_file_mode= xorriso->do_global_mode;
 sopts.file_mode= xorriso->global_file_mode;
 sopts.replace_uid= (xorriso->do_global_uid);
 sopts.uid= xorriso->global_uid;
 sopts.replace_gid= (xorriso->do_global_gid);
 sopts.gid= xorriso->global_gid;
 sopts.input_charset= NULL;
 sopts.ouput_charset= NULL;
 sopts.fifo_size= xorriso->fs * 2048;

 if(xorriso->out_drive_handle == xorriso->in_drive_handle ||
    xorriso->in_drive_handle == NULL) {
   ret= isoburn_prepare_disc(drive, &disc, &sopts);
 } else {
   s= isoburn_disc_get_status(drive);
   if(s!=BURN_DISC_BLANK) {
     s= burn_disc_get_status(drive);
     if(s!=BURN_DISC_BLANK)
       sprintf(xorriso->info_text,
               "-indev differs from -outdev and -outdev media is not blank");
     else
       sprintf(xorriso->info_text,
        "-indev differs from -outdev and -outdev media holds valid ISO image");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     {ret= 0; goto ex;}
   }
   ret= Xorriso_get_drive_handles(xorriso, &source_dinfo, &source_drive,
                                  "on attempt to get source for write", 0);
   if(ret<=0)
     goto ex;
   ret= isoburn_prepare_new_image(source_drive, &disc, &sopts);
 }
 if (ret <= 0) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,"Failed to prepare session write run");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   {ret= 0; goto ex;}
 }

 ret= Xorriso_make_write_options(xorriso, drive, &burn_options, 0);
 if(ret<=0)
   goto ex;

 ret= burn_disc_get_sectors(disc);
 if(flag&1)
   goto ex;

 media_space= burn_disc_available_space(drive, burn_options) / (off_t) 2048;
 if(media_space < ret) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,"Image size %ds exceeds free space on media %ds",
           ret, media_space);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   {ret= 0; goto ex;}
 }

 isoburn_disc_write(burn_options, disc);
 burn_write_opts_free(burn_options);

 ret= Xorriso_pacifier_loop(xorriso, drive, 0);
 if(ret<=0)
   goto ex;
 if(!isoburn_drive_wrote_well(drive)) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,
           "libburn indicates failure with writing.");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   ret= 0; goto ex;
 }

 sessions= burn_disc_get_sessions(disc, &num_sessions);
 if(num_sessions>0) {
   tracks= burn_session_get_tracks(sessions[0], &num_tracks);
   if(tracks!=NULL && num_tracks>0) {
     burn_track_get_counters(tracks[0],&readcounter,&writecounter);
     sprintf(xorriso->info_text,
             "ISO image produced: %d sectors. Written to media: %d sectors\n",
             (int) readcounter/2048, (int) writecounter/2048);
     Xorriso_info(xorriso, 0);
   }
 }

 ret= isoburn_activate_session(drive);
 Xorriso_process_msg_queues(xorriso,0);
 if(ret<=0) {
   sprintf(xorriso->info_text,
           "Could not write new set of volume descriptors");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   goto ex;
 }

 sprintf(xorriso->info_text, "Writing completed sucessfully.\n\n");
 Xorriso_info(xorriso, 0);
 ret= 1;
ex:;
 if(disc!=NULL)
   burn_disc_free(disc);
 Xorriso_process_msg_queues(xorriso,0);
 return(ret);
} 


int Xorriso_pacifier_loop(struct XorrisO *xorriso, struct burn_drive *drive,
                          int flag)
{
 int ret, size, free_bytes, i;
 struct burn_progress progress;
 char *status_text;
 enum burn_drive_status drive_status;
 double start_time, current_time;

 start_time= Sfile_microtime(0);
 while(burn_drive_get_status(drive, NULL) == BURN_DRIVE_SPAWNING)
   usleep(100002);

 while(1) {
   drive_status= burn_drive_get_status(drive, &progress);
   if(drive_status == BURN_DRIVE_IDLE)
 break;
    current_time= Sfile_microtime(0);
   if(drive_status == BURN_DRIVE_WRITING && progress.sectors > 0) {
     sprintf(xorriso->info_text, "Writing: sector %d of %d",
             progress.sector, progress.sectors);
     ret= isoburn_get_fifo_status(drive, &size, &free_bytes, &status_text);
     if(ret>0 )
       sprintf(xorriso->info_text+strlen(xorriso->info_text),
               "  [fifo %s, %2d%% fill]", status_text,
               (int) (100.0-100.0*((double) free_bytes)/(double) size));
   } else if(drive_status == BURN_DRIVE_CLOSING_SESSION ||
             drive_status == BURN_DRIVE_CLOSING_TRACK)
     sprintf(xorriso->info_text,
             "Closing track/session. Working since %.f seconds",
             current_time-start_time);
   else if(drive_status == BURN_DRIVE_FORMATTING)
     sprintf(xorriso->info_text, "Formatting. Working since %.f seconds",
             current_time-start_time);
   else
     sprintf(xorriso->info_text,
             "Thank you for being patient since %.f seconds",
             current_time-start_time);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "UPDATE", 0);

   for(i= 0; i<10; i++) {
     Xorriso_process_msg_queues(xorriso, 0);
     usleep(100000);
   }
 }
 return(1);
}


int Xorriso_get_volume(struct XorrisO *xorriso, struct iso_volume **volume,
                       int flag)
{
 if(xorriso->in_volset_handle==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,"No volset is loaded.");
   if(xorriso->indev[0]==0)
     sprintf(xorriso->info_text+strlen(xorriso->info_text),
             " No -dev or -indev is selected.");
   else
     sprintf(xorriso->info_text+strlen(xorriso->info_text),
             " Possible program error with drive '%s'.", xorriso->indev);

   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 *volume= iso_volset_get_volume(
                           (struct iso_volset *) xorriso->in_volset_handle, 0);
 return(*volume != NULL);
}


/* @param eff_path  returns resulting effective path.
                    Must provide at least SfileadrL bytes of storage.
   @param flag bit0= do not produce problem events (unless faulty path format)
               bit1= work purely literally, do not use libisofs
               bit2= (with bit1) this is an address in the disk world
   @return -1 = faulty path format, 0 = not found ,
            1 = found simple node , 2 = found directory
*/
int Xorriso_normalize_img_path(struct XorrisO *xorriso, char *wd,
                               char *img_path, char eff_path[], int flag)
{
 int ret, is_dir= 0, done= 0;
 struct iso_volume *volume;
 struct iso_tree_node_dir *dir= NULL;
 struct iso_tree_node *node= NULL;
 char path[SfileadrL], *apt, *npt, sfe[5*SfileadrL], *cpt;

 eff_path[0]= 0;
 if(img_path[0]==0)
   return(2); /* root directory */

 if(!(flag&2)) {
   ret= Xorriso_get_volume(xorriso, &volume, 0);
   if(ret<=0)
     return(ret);
 }

 apt= npt= path;
 if(img_path[0]!='/') {
   strcpy(path, wd);
   ret= Sfile_add_to_path(path, img_path, 0);
   if(ret<=0)
     goto much_too_long;
 } else
   if(Sfile_str(path, img_path, 0)<=0)
     return(-1);

 if(path[0]!='/') {
   sprintf(xorriso->info_text,
        "Internal error: Unresolvable relative addressing in iso_rr_path '%s'",
        img_path);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "FATAL", 0);
   return(-1);
 } else if(path[1]==0)
   return(2); /* root directory */

 for(npt= apt; !done; apt= npt+1) {
   npt= strchr(apt, '/');
   if(npt==NULL) {
     npt= apt+strlen(apt);
     done= 1;
   } else
     *npt= 0;
   if(*apt==0) {
     *apt= '/';
     apt++;
     if(done)
 break;
 continue;
   }
   if(strcmp(apt,".")==0)
 continue;
   if(strcmp(apt,"..")==0) {
     if(!(flag&2)) {
       node= (struct iso_tree_node *) dir;
       if(node==NULL) {
bonked_root:;
         sprintf(xorriso->info_text,
                 "Relative addressing in path exceeds root directory: %s",
                 Text_shellsafe(img_path, sfe, 0));
         Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
         return(-1);
       }
       dir= iso_tree_node_get_parent(node);
     }
     /* truncate eff_path */;
     cpt= strrchr(eff_path, '/');
     if(cpt==NULL) /* ??? if not flag&2 then this is a bug */
       goto bonked_root;
     *cpt= 0;
 continue;
   }
   ret= Sfile_add_to_path(eff_path, apt, 0);
   if(ret<=0) {
much_too_long:;
     sprintf(xorriso->info_text, "Effective path gets much too long (%d)",
             (int) (strlen(eff_path)+strlen(apt)+1));
     if(!(flag&1))
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     return(-1);
   }
   if(!(flag&2)) {
     dir= (struct iso_tree_node_dir *) node;
     node= iso_tree_volume_path_to_node(volume,eff_path);
     if(node==NULL) {
         sprintf(xorriso->info_text, "Cannot find in ISO image: %s",
                 Text_shellsafe(eff_path, sfe, 0));
         if(!(flag&1))
           Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
         return(0);
     }
     if(dir==NULL) /* could be false with  "/dir/.." */
       dir= iso_tree_node_get_parent(node);
     is_dir= LIBISO_ISDIR(node);
   }
 }
 return(1+!!is_dir);
}


int Xorriso_get_node_by_path(struct XorrisO *xorriso,
                             char *in_path, char *eff_path,
                             struct iso_tree_node **node, int flag)
{
 int ret;
 char sfe[5*SfileadrL], path[SfileadrL];
 struct iso_volume *volume;

 ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, in_path, path, 0);
 if(ret<=0)
   return(ret);
 if(eff_path!=NULL)
   strcpy(eff_path, path);
 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);
 *node= iso_tree_volume_path_to_node(volume,path);
 if(*node==NULL) {
   sprintf(xorriso->info_text, "Not found in ISO image: %s",
          Text_shellsafe(path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 return(1);
}


int Xorriso_transfer_properties(struct XorrisO *xorriso, struct stat *stbuf,
                                struct iso_tree_node *node, int flag)
{
 iso_tree_node_set_permissions(node, stbuf->st_mode & 07777);
 iso_tree_node_set_uid(node, stbuf->st_uid);
 iso_tree_node_set_gid(node, stbuf->st_gid);
 iso_tree_node_set_atime(node, stbuf->st_atime);
 iso_tree_node_set_mtime(node, stbuf->st_mtime);
 iso_tree_node_set_ctime(node, stbuf->st_ctime);
 return(1);
}


/* @param flag bit0= recursion is active */
int Xorriso_add_tree(struct XorrisO *xorriso, struct iso_tree_node_dir *dir,
                     char *img_dir_path, char *disk_dir_path,
                     struct LinkiteM *link_stack, int flag)
{
 struct iso_volume *volume;
 struct iso_tree_node *node;
 int ret, target_is_dir, source_is_dir, source_is_link, fret, was_failure= 0;
 int do_not_dive;
 struct DirseQ *dirseq= NULL;
 char *name, *img_name, *srcpt;
 struct stat stbuf, hstbuf;
 dev_t dir_dev;
 struct LinkiteM *own_link_stack;

#ifdef Xorriso_fat_local_meM
 char sfe[5*SfileadrL], sfe2[5*SfileadrL];
 char disk_path[2*SfileadrL], img_path[2*SfileadrL], link_target[SfileadrL];
#else /* Xorriso_fat_local_meM */

 char *sfe= NULL, *sfe2= NULL;
 char *disk_path= NULL, *img_path= NULL, *link_target= NULL;

 /* Avoiding large local memory objects in order to save stack space */
 sfe= malloc(5*SfileadrL);
 sfe2= malloc(5*SfileadrL);
 disk_path= malloc(2*SfileadrL);
 img_path= malloc(2*SfileadrL);
 link_target= malloc(SfileadrL);
 if(sfe==NULL || sfe2==NULL || disk_path==NULL || img_path==NULL ||
    link_target==NULL) {
   Xorriso_no_malloc_memory(xorriso, &sfe, 0);
   {ret= -1; goto ex;}
 }
   
#endif /* ! Xorriso_fat_local_meM */

 own_link_stack= link_stack;

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   goto ex;

 if(lstat(disk_dir_path, &stbuf)==-1)
   goto cannot_open_dir;
 dir_dev= stbuf.st_dev;
 if(S_ISLNK(stbuf.st_mode)) {
   if(!(xorriso->do_follow_links || (xorriso->do_follow_param && !(flag&1))))
     {ret= 2; goto ex;}
   if(stat(disk_dir_path, &stbuf)==-1)
     goto cannot_open_dir;
   if(dir_dev != stbuf.st_dev &&
      !(xorriso->do_follow_mount || (xorriso->do_follow_param && !(flag&1))))
     {ret= 2; goto ex;}
 }
 ret= Dirseq_new(&dirseq, disk_dir_path, 1);
 if(ret<0) {
   sprintf(xorriso->info_text,"Failed to create source filesystem iterator");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 if(ret==0) {
cannot_open_dir:;
   sprintf(xorriso->info_text,"Cannot open as source directory: %s",
           Text_shellsafe(disk_dir_path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   {ret= 0; goto ex;}
 }

 if(Sfile_str(disk_path, disk_dir_path,0)<=0)
   {ret= -1; goto ex;}
 if(disk_path[0]==0 || disk_path[strlen(disk_path)-1]!='/')
   strcat(disk_path,"/");
 name= disk_path+strlen(disk_path);
 if(Sfile_str(img_path, img_dir_path, 0)<=0)
   {ret= -1; goto ex;}
 if(img_path[0] || img_path[strlen(img_path)-1]!='/')
   strcat(img_path,"/");
 img_name= img_path+strlen(img_path);

 while(1) { /* loop over directory content */
   Linkitem_reset_stack(&own_link_stack, link_stack, 0);
   srcpt= disk_path;
   Xorriso_process_msg_queues(xorriso,0);
   ret= Dirseq_next_adr(dirseq,name,0);
   if(ret==0)
 break;
   if(ret<0) {
     sprintf(xorriso->info_text,"Failed to obtain next directory entry");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
     {ret= -1; goto ex;}
   }
   strcpy(img_name, name);
   if(Xorriso_much_too_long(xorriso, strlen(img_path), 0)<=0)
     {ret= 0; goto was_problem;}
   if(Xorriso_much_too_long(xorriso, strlen(srcpt), 0)<=0)
     {ret= 0; goto was_problem;}
   if(lstat(srcpt, &stbuf)==-1) {
cannot_lstat:;
     sprintf(xorriso->info_text,
             "Cannot determine attributes of source file %s",
             Text_shellsafe(srcpt, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "SORRY", 0);
     ret= 0; goto was_problem;
   }
   source_is_dir= 0;
   source_is_link= S_ISLNK(stbuf.st_mode);
   if(xorriso->do_follow_links && source_is_link) {
     /* Xorriso_hop_link checks for wide link loops */
     ret= Xorriso_hop_link(xorriso, srcpt, &own_link_stack, &hstbuf, 0);
     if(ret<0)
       goto was_problem;
     if(ret==1) {
       ret= Xorriso_resolve_link(xorriso, srcpt, link_target, 0);
       if(ret<=0)
         goto was_problem;
       srcpt= link_target;
       if(lstat(srcpt, &stbuf)==-1)
         goto cannot_lstat;
     } else {
       if(Xorriso_eval_problem_status(xorriso, 0, 1|2)<0)
         {ret= 0; goto was_problem;} 
     }
   } else if (S_ISLNK(stbuf.st_mode)) {
     ret= Xorriso_resolve_link(xorriso, srcpt, link_target, 1);
     if(ret<=0)
       goto was_problem;
   }
   do_not_dive= 0;
   if(S_ISDIR(stbuf.st_mode)) {
     source_is_dir= 1;
     if(dir_dev != stbuf.st_dev && !xorriso->do_follow_mount)
       do_not_dive= 1;
   } else if(!(S_ISREG(stbuf.st_mode) || S_ISLNK(stbuf.st_mode))) {
     sprintf(xorriso->info_text,"Source file %s %s non-supported file type",
             Text_shellsafe(disk_path, sfe, 0),
             source_is_link ? "leads to" : "is of");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     ret= 0; goto was_problem;
   }

   /* does a node exist with this name ? */
   node= iso_tree_volume_path_to_node(volume,img_path);
   if(node!=NULL) {
     target_is_dir= (iso_tree_node_get_type(node)==LIBISO_NODE_DIR);
     if(!(target_is_dir && source_is_dir)) {
       Xorriso_process_msg_queues(xorriso,0);

       /* handle overwrite situation */;
       if(xorriso->do_overwrite==1 ||
          (xorriso->do_overwrite==2 && !target_is_dir)) {
         ret= Xorriso_rmi(xorriso, NULL, img_path, 1|8);
         if(ret<=0)
           goto was_problem;
         if(ret==3) {
           sprintf(xorriso->info_text, "User revoked adding of: %s",
                   Text_shellsafe(img_path, sfe, 0));
           Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
           ret= 0; goto was_problem;
         }
         node= NULL;
       } else {
         sprintf(xorriso->info_text,
           "While grafting %s : file object exists and may not be overwritten",
           Text_shellsafe(img_path,sfe,0));
         Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
         ret= 0; goto was_problem;
       }
     }
   }

   if(node==NULL) {
     if(S_ISLNK(stbuf.st_mode)) {

       /* <<< One should rather change libisofs so that iso_tree_add_node()
              adds a disk_link as RR link, if RR is enabled */

       node= iso_tree_add_symlink(dir, img_name, link_target);
       if(node!=NULL) {
         ret= Xorriso_transfer_properties(xorriso, &stbuf, node, 0);
         if(ret<=0)
           goto was_problem;
       } else
         {ret= 0; goto was_problem;}
     } else
       node= iso_tree_add_node(dir, srcpt);
   }
   if(node == NULL) {
     Xorriso_process_msg_queues(xorriso,0);
     sprintf(xorriso->info_text,
             "While grafting %s=%s : libisofs_errno = %d",
             Text_shellsafe(img_path,sfe,0), Text_shellsafe(disk_path,sfe2,0),
             libisofs_errno);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     ret=0; goto was_problem;
   }
   xorriso->volset_change_pending= 1;
   if(source_is_dir) {
     if(do_not_dive) {
       sprintf(xorriso->info_text, "Did not follow mount point : %s",
               Text_shellsafe(disk_path, sfe, 0));
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     } else {
       ret= Xorriso_add_tree(xorriso, (struct iso_tree_node_dir *) node,
                             img_path, disk_path, own_link_stack, 1);
     }
     if(ret<=0)
       goto was_problem;
   }

 continue; /* regular bottom of loop */
was_problem:;
   was_failure= 1;
   fret= Xorriso_eval_problem_status(xorriso, ret, 1|2);
   if(fret<0)
     goto ex;
 }

 ret= 1;
ex:

#ifndef Xorriso_fat_local_meM
 if(sfe!=NULL)
   free(sfe);
 if(sfe2!=NULL)
   free(sfe2);
 if(disk_path!=NULL)
   free(disk_path);
 if(img_path!=NULL)
   free(img_path);
 if(link_target!=NULL)
   free(link_target);
#endif /* ! Xorriso_fat_local_meM */

 Xorriso_process_msg_queues(xorriso,0);
 Linkitem_reset_stack(&own_link_stack, link_stack, 0);
 Dirseq_destroy(&dirseq, 0);
 if(ret<=0)
   return(ret);
 return(!was_failure);
}


/** @param flag bit0= mkdir: graft in as empty directory, not as copy from disk
    @return <=0 = error , 1 = added simple node , 2 = added directory */
int Xorriso_graft_in(struct XorrisO *xorriso, char *disk_path, char *img_path,
                     int flag)
{
 struct iso_volume *volume;
 char path[SfileadrL], *apt, *npt, *cpt, sfe[5*SfileadrL];
 struct iso_tree_node_dir *dir;
 struct iso_tree_node *node;
 int done= 0, is_dir= 0, l, ret, target_is_dir, source_is_dir;
 struct stat stbuf;

 for(cpt= img_path; 1; cpt++) {
/*
   if(cpt[0]!='/')
 break;
*/
   cpt= strstr(cpt,"/.");
   if(cpt==NULL)
 break;
   if(cpt[2]=='.') {
     if(cpt[3]=='/' || cpt[3]==0)
 break;
   } else if(cpt[2]=='/' || cpt[2]==0)
 break;
 }
 if(cpt!=NULL) {
   sprintf(xorriso->info_text,
          "Unsupported relative addressing in iso_rr_path '%s'", img_path);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "SORRY", 0);
   return(0);
 }

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);

 strncpy(path, img_path, sizeof(path)-1);
 path[sizeof(path)-1]= 0;
 apt= npt= path;

 if(!(flag&1)) {
   if(xorriso->do_follow_links || xorriso->do_follow_param)
     ret= stat(disk_path, &stbuf);
   else
     ret= lstat(disk_path, &stbuf);
   if(ret == -1) {
     Xorriso_process_msg_queues(xorriso,0);
     sprintf(xorriso->info_text,
            "Cannot determine attributes of source file '%s'",disk_path);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "SORRY", 0);
     return(0);
   }
   if(S_ISDIR(stbuf.st_mode))
     is_dir= 1;
   else if(!(S_ISREG(stbuf.st_mode) || S_ISLNK(stbuf.st_mode))) {
     Xorriso_process_msg_queues(xorriso,0);
     sprintf(xorriso->info_text,
             "Source file '%s' is of non-supported file type", disk_path);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     return(0);
   } else {
     l= strlen(img_path);
     if(l>0)
       if(img_path[l-1]=='/')
         l= 0;
     if(l==0) {
       sprintf(xorriso->info_text,
               "Source '%s' is not a directory. Target '%s' would be.",
               disk_path, img_path);
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       return(0);
     }
   }
 }

 dir= iso_volume_get_root(volume);
 if(dir==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,
           "While grafting '%s' : no root node available", img_path);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(0);
 }
 for(npt= apt; !done; apt= npt+1) {
   npt= strchr(apt, '/');
   if(npt==NULL) {
     npt= apt+strlen(apt);
     done= 1;
   } else
     *npt= 0;
   if(*apt==0) {
     *apt= '/';
     apt++;
     if(done)
       goto attach_source;
 continue;
   }
   source_is_dir= (is_dir || (flag&1) || !done);
   node= iso_tree_volume_path_to_node(volume,path);
   if(node!=NULL) {
     target_is_dir= (iso_tree_node_get_type(node)==LIBISO_NODE_DIR);
     if(!(target_is_dir && source_is_dir)) {
       Xorriso_process_msg_queues(xorriso,0);

       /* handle overwrite situation */;
       if(xorriso->do_overwrite==1 ||
          (xorriso->do_overwrite==2 && !target_is_dir)) {
         ret= Xorriso_rmi(xorriso, NULL, path, 1|8);
         if(ret<=0)
           return(ret);
         if(ret==3) {
           sprintf(xorriso->info_text, "User revoked adding of: %s",
                   Text_shellsafe(disk_path, sfe, 0));
           Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
           return(0);
         }
         node= NULL;
         goto handle_path_node;
       }

       sprintf(xorriso->info_text,
              "While grafting '%s' : '%s' exists and may not be overwritten",
              img_path, path);
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       return(0);
     }
     dir= (struct iso_tree_node_dir *) node;
   }

handle_path_node:;
   if(node==NULL && source_is_dir) { /* make a directory */
     dir= iso_tree_add_dir(dir, apt);
     if(dir==NULL) {
       Xorriso_process_msg_queues(xorriso,0);
       sprintf(xorriso->info_text,
               "While grafting '%s' : could not insert '%s'", img_path, path);
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       return(0);
     }
     xorriso->volset_change_pending= 1;
     iso_tree_node_set_ctime((struct iso_tree_node *) dir, time(NULL));

     /* >>> copy properties from correspondent directory in disk_path
            if there is any */;

   }
   if(done) {
attach_source:;
     if(flag&1) {
       /* directory node was created above */;

     } else if(is_dir) {
       ret= Xorriso_add_tree(xorriso, dir, img_path, disk_path, NULL, 0);
       if(ret<=0)
         return(ret);

     } else {
       node= iso_tree_add_node(dir, disk_path);
       if(node == NULL) {
         Xorriso_process_msg_queues(xorriso,0);
         sprintf(xorriso->info_text,
                 "While grafting '%s'='%s' : libisofs_errno = %d",
                 img_path, disk_path, libisofs_errno);
         Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
         return(0);
       }
       xorriso->volset_change_pending= 1;
       iso_tree_node_set_name(node, apt);
     }
   } else
     *npt= '/';
 }
 Xorriso_process_msg_queues(xorriso,0);
 return(1+!!is_dir);
}


int Xorriso__text_to_sev(char *severity_name, int *severity_number, int flag)
{
 int ret= 1;

 if(severity_name[0]==0)
   *severity_number= 0;
 else
   ret= burn_text_to_sev(severity_name, severity_number, 0);
 return(ret);
}


int Xorriso_process_msg_queues(struct XorrisO *xorriso, int flag)
{
 int ret, error_code= 0, os_errno= 0, count= 0, pass;
 char severity[80];

 if(!xorriso->libs_are_started)
   return(1);
 for(pass= 0; pass< 2; pass++) {
   while(1) {
     if(pass==0)
       ret= iso_msgs_obtain("ALL", &error_code, xorriso->info_text, &os_errno,
                             severity);
     else
       ret= burn_msgs_obtain("ALL", &error_code, xorriso->info_text, &os_errno,
                             severity);
     if(ret<=0)
   break;
     Xorriso_msgs_submit(xorriso, error_code, xorriso->info_text, os_errno, 
                         severity, (pass+1)<<2);
     count++;
   }
 }
 if(xorriso->library_msg_direct_print && count>0) {
   sprintf(xorriso->info_text,"   (%d library messages repeated by xorriso)\n",
           count);
   Xorriso_info(xorriso, 0);
 }
 return(1);
}


/* @param flag bit0=short report form
               bit1=report about output drive
*/
int Xorriso_toc(struct XorrisO *xorriso, int flag)
{
 int num_sessions= 0, num_tracks= 0, lba= 0, nwa= -1, pmin, psec, pframe, ret;
 int track_count= 0, session_no, track_no, profile_no= -1;
 int last_track_start= 0, last_track_size= -1, num_data= 0, is_data= 0;
 int is_inout_drive= 0;
 char profile_name[80],*respt,*devadr;
 struct burn_disc *disc= NULL;
 struct burn_session **sessions;
 struct burn_track **tracks;
 struct burn_toc_entry toc_entry;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 enum burn_disc_status s;
 char mem_text[80];

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                               "on attempt to print Table Of Content", flag&2);
 if(ret<=0)
   return(0);

 respt= xorriso->result_line;

 if(strcmp(xorriso->indev, xorriso->outdev)==0)
   is_inout_drive= 1;
 if(flag&2)
   devadr= xorriso->outdev;
 else
   devadr= xorriso->indev;
 sprintf(respt, "Drive current: %s '%s'\n",
         (is_inout_drive ? "-dev" : (flag&2 ? "-outdev" : "-indev")),
         devadr);
 Xorriso_result(xorriso,0);
 sprintf(respt, "Drive type   : vendor '%s' product '%s' revision '%s'\n",
        dinfo[0].vendor, dinfo[0].product, dinfo[0].revision);
 if(!(flag&1))
   Xorriso_result(xorriso,0);
 
 sprintf(respt, "Media current: ");
 ret= burn_disc_get_profile(drive, &profile_no, profile_name);
 if (profile_no > 0 && ret > 0) {
   if (profile_name[0])
     sprintf(respt+strlen(respt), "%s\n", profile_name);
   else
     sprintf(respt+strlen(respt), "%4.4Xh\n", profile_no);
 } else
    sprintf(respt+strlen(respt), "is not recognizable\n");
 Xorriso_result(xorriso,0);

 sprintf(respt, "Media status : ");
 s= isoburn_disc_get_status(drive);
 if (s == BURN_DISC_FULL) {
   sprintf(respt+strlen(respt), "is written , is closed\n");
 } else if (s == BURN_DISC_APPENDABLE) {
   sprintf(respt+strlen(respt), "is written , is appendable\n");
 } else if (s == BURN_DISC_BLANK) {
   sprintf(respt+strlen(respt), "is blank\n");
 } else if (s == BURN_DISC_EMPTY)
   sprintf(respt+strlen(respt), "is not present\n");
 else
   sprintf(respt+strlen(respt), "is not recognizable\n");
 Xorriso_result(xorriso,0);

 if(s != BURN_DISC_FULL && s != BURN_DISC_APPENDABLE)
   return(1);
  
 if(xorriso->request_to_abort)
   return(1);

 disc= burn_drive_get_disc(drive);
 if (disc==NULL) {
   Xorriso_process_msg_queues(xorriso,0);

#define Xorriso_with_isoburn_get_min_start_bytE 1
#ifdef Xorriso_with_isoburn_get_min_start_bytE
   { off_t start_byte= 0;
     ret= isoburn_get_min_start_byte(drive, &start_byte, 0);
     nwa= start_byte / 2048;
   }
#else
   ret= isoburn_disc_track_lba_nwa(drive, NULL, 0, &lba, &nwa);
#endif

   if(ret<=0) {
     Xorriso_process_msg_queues(xorriso,0);
     if(flag&1)
       return(0);
     sprintf(xorriso->info_text, "Cannot obtain Table Of Content");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     return(0);
   }
   /* fabricate TOC */
   sprintf(respt, "Media content: session %2d  ", 1);
   sprintf(respt+strlen(respt), "track    %2d %s  lba: %9d\n", 1, "data ", 0);
   if(!(flag&1))
     Xorriso_result(xorriso,0);
   last_track_start= lba;
   sprintf(respt, "Media content: session %2d  ", 1);
   sprintf(respt+strlen(respt), "leadout            lba: %9d\n", nwa);
   if(!(flag&1))
     Xorriso_result(xorriso,0);
   num_data= last_track_size= nwa;
   num_sessions= 1;
 } else {
   sessions= burn_disc_get_sessions(disc, &num_sessions);
   for (session_no= 0; session_no<num_sessions && !(xorriso->request_to_abort);
        session_no++) {
     tracks = burn_session_get_tracks(sessions[session_no], &num_tracks);
     if (tracks==NULL)
   continue;
     for(track_no= 0; track_no<num_tracks && !(xorriso->request_to_abort);
         track_no++) {
       track_count++;
       is_data= 0;
       burn_track_get_entry(tracks[track_no], &toc_entry);
       if (toc_entry.extensions_valid & 1) {
         /* DVD extension valid */
         lba= toc_entry.start_lba;
       } else {
         lba= burn_msf_to_lba(toc_entry.pmin, toc_entry.psec, toc_entry.pframe);
       }
       sprintf(respt, "Media content: session %2d  ", session_no+1);
       sprintf(respt+strlen(respt), "track    %2d %s  lba: %9d\n",
               track_count, ((toc_entry.control&7)<4?"audio":"data "), lba);
       if(!(flag&1))
         Xorriso_result(xorriso,0);
       last_track_start= lba;
       if((toc_entry.control&7)>=4) /* data track */
         is_data= 1;
     }
     burn_session_get_leadout_entry(sessions[session_no], &toc_entry);
     if (toc_entry.extensions_valid & 1) {
       lba= toc_entry.start_lba;
       burn_lba_to_msf(lba, &pmin, &psec, &pframe);
     } else {
       lba= burn_msf_to_lba(pmin, psec, pframe);
       lba= burn_msf_to_lba(toc_entry.pmin, toc_entry.psec, toc_entry.pframe);
     }
     sprintf(respt, "Media content: session %2d  ", session_no+1);
     sprintf(respt+strlen(respt), "leadout            lba: %9d\n", lba);
     if(!(flag&1))
       Xorriso_result(xorriso,0);
     last_track_size= lba - last_track_start;
     if(is_data)
       num_data+= last_track_size;
   }
 }
 if(xorriso->request_to_abort)
   return(1);
 Sfile_scale(((double) num_data) * 2048.0, mem_text,5,1e4,1);
 sprintf(respt, "Media summary: %d session%s, %d data blocks, %s\n",
         num_sessions, (num_sessions==1 ? "" : "s"), num_data, mem_text);
 Xorriso_result(xorriso,0);

 if (s == BURN_DISC_APPENDABLE && nwa!=0) {
   ret= isoburn_disc_track_lba_nwa(drive, NULL, 0, &lba, &nwa);
   if(ret>0) {
     sprintf(respt, "Media nwa    : %ds\n", nwa);
     if(!(flag&1))
       Xorriso_result(xorriso,0);
   }
 }

 if (disc!=NULL)
   burn_disc_free(disc);
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_show_devices(struct XorrisO *xorriso, int flag)
{
 char adr[BURN_DRIVE_ADR_LEN];
 int i;
 struct burn_drive_info *drive_list= NULL;
 unsigned int drive_count;
 char *respt, perms[8];
 struct stat stbuf;

 sprintf(xorriso->info_text, "Beginning to scan for devices ...\n");
 Xorriso_info(xorriso,0);

 burn_drive_clear_whitelist(); 
 while(!burn_drive_scan(&drive_list, &drive_count)) {
   Xorriso_process_msg_queues(xorriso,0);
   usleep(100000);
 }
 Xorriso_process_msg_queues(xorriso,0);
 if(drive_count <= 0) {

   /* >>> was a drive_list created at all ? */
   /* >>> must it be freed ? */

   sprintf(xorriso->info_text, "No drives found");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 sprintf(xorriso->info_text, "Full drive scan done\n");
 Xorriso_info(xorriso,0);

 respt= xorriso->result_line;
 for(i= 0; i < drive_count && !(xorriso->request_to_abort); i++) {
   if(burn_drive_get_adr(&(drive_list[i]), adr)<=0)
     strcpy(adr, "-get_adr_failed-");
   Xorriso_process_msg_queues(xorriso,0);
   if(stat(adr,&stbuf)==-1) {
     sprintf(perms,"errno=%d",errno);
   } else { 
     strcpy(perms,"------");
     if(stbuf.st_mode&S_IRUSR) perms[0]= 'r';
     if(stbuf.st_mode&S_IWUSR) perms[1]= 'w';
     if(stbuf.st_mode&S_IRGRP) perms[2]= 'r';
     if(stbuf.st_mode&S_IWGRP) perms[3]= 'w';
     if(stbuf.st_mode&S_IROTH) perms[4]= 'r';
     if(stbuf.st_mode&S_IWOTH) perms[5]= 'w';
   }
   sprintf(respt, "%d  -dev '%s' %s :  '%-8.8s' '%s' \n",
           i, adr, perms, drive_list[i].vendor, drive_list[i].product);
   Xorriso_result(xorriso,0);
 }
 burn_drive_info_free(drive_list);
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_tell_media_space(struct XorrisO *xorriso,
                             int *media_space, int *free_space, int flag)
{
 int ret;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 struct burn_write_opts *burn_options;

 (*free_space)= (*media_space)= 0;

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to -tell_media_space", 2);
 if(ret<=0)
   return(0);

 ret= Xorriso_make_write_options(xorriso, drive, &burn_options, 0);
 if(ret<=0)
   return(-1);
 (*free_space)= (*media_space)=
                 burn_disc_available_space(drive, burn_options) / (off_t) 2048;
 burn_write_opts_free(burn_options);

 if(xorriso->volset_change_pending) {
   ret= Xorriso_write_session(xorriso, 1);
   if(ret>0)
     (*free_space)-= ret;
 }
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


/* @param flag bit0=fast , bit1=deformat
   @return 0=failure, did not touch media , -1=failure, altered media
           1=success, altered media       ,  2=success, did not touch media
*/
int Xorriso_blank_media(struct XorrisO *xorriso, int flag)
{
 int ret, do_deformat= 0;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 enum burn_disc_status disc_state;
 struct burn_progress p;
 double percent = 1.0;
 int current_profile;
 char current_profile_name[80];
 char mode_names[4][80]= {"all", "fast", "deformat", "deformat_quickest"};

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to -blank", 2);
 if(ret<=0)
   return(0);

 burn_disc_get_profile(drive, &current_profile, current_profile_name);

 /* >>> */;

 disc_state = isoburn_disc_get_status(drive);
 if(current_profile == 0x13) { /* overwriteable DVD-RW */
   /* Depending on flag bit1 formatted DVD-RW will get blanked to sequential
      state or pseudo blanked by invalidating an eventual ISO image. */
   if(flag&2)
     do_deformat= 1;
 } else if(current_profile == 0x14) { /* sequential DVD-RW */
   if((flag&1) && !(flag&2)) {
     sprintf(xorriso->info_text,
             "-blank: DVD-RW present. Mode 'fast' defaulted to mode 'all'.");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     sprintf(xorriso->info_text,
             "Mode 'deformat_quickest' produces single-session-only media.");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "HINT", 0);
     flag&= ~1;
   }
 } else if(disc_state == BURN_DISC_BLANK) {
   sprintf(xorriso->info_text,"Blank media detected. Will leave it untouched");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   return 2;
 } else if(disc_state==BURN_DISC_FULL || disc_state==BURN_DISC_APPENDABLE) {
   ;
 } else if(disc_state == BURN_DISC_EMPTY) {
   sprintf(xorriso->info_text,"No media detected in drive");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return 0;
 } else {
   sprintf(xorriso->info_text, "Unsuitable drive and media state");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return 0;
 }
 if(!isoburn_disc_erasable(drive)) {
   sprintf(xorriso->info_text, "Media is not of erasable type");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return 0;
 }
 if(xorriso->do_dummy) {
   sprintf(xorriso->info_text,
           "-dummy mode prevents blanking of media in mode '%s'.",
           mode_names[flag&3]);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   return(1);
 }
 sprintf(xorriso->info_text, "Beginning to blank media in mode '%s'.\n",
         mode_names[flag&3]);
 Xorriso_info(xorriso,0);

 if(do_deformat)
   burn_disc_erase(drive, (flag&1));
 else
   isoburn_disc_erase(drive, (flag&1));
 usleep(1000000);
 while (burn_drive_get_status(drive, &p) != BURN_DRIVE_IDLE) {
   if(p.sectors>0 && p.sector>=0) /* display 1 to 99 percent */
     percent = 1.0 + ((double) p.sector+1.0) / ((double) p.sectors) * 98.0;
   sprintf(xorriso->info_text, "Blanking  ( %.1f%% done )", percent);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "UPDATE", 0);
   usleep(1000000);
 }
 Xorriso_process_msg_queues(xorriso,0);
 sprintf(xorriso->info_text, "Blanking done\n");
 Xorriso_info(xorriso,0);
 return(1);
}

/* @return 0=failure, did not touch media , -1=failure, altered media
           1=success, altered media       ,  2=success, did not touch media
*/
int Xorriso_format_media(struct XorrisO *xorriso, int flag)
{
 int ret, mode_flag= 0;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 int current_profile;
 char current_profile_name[80];

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to -format", 2);
 if(ret<=0)
   return(0);

 burn_disc_get_profile(drive, &current_profile, current_profile_name);
 if(current_profile == 0x14) {
   ; /* ok DVD-RW sequential */
 } else if(current_profile == 0x1a) {
   mode_flag= 2;
 } else {
   sprintf(xorriso->info_text,
          "Can only -format DVD+RW and sequential DVD-RW");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   sprintf(xorriso->info_text,"Media current: %s (%4.4xh)",
           current_profile_name, current_profile);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   return 0;
 }

 if(xorriso->do_dummy) {
   sprintf(xorriso->info_text, "-dummy mode prevents formatting of media.");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   return(1);
 }
 sprintf(xorriso->info_text, "Beginning to format media.\n");
 Xorriso_info(xorriso, 0);
 burn_disc_format(drive, (off_t) 0, mode_flag);

 ret= Xorriso_pacifier_loop(xorriso, drive, 0);
 if(ret<=0)
   return(ret);

 Xorriso_process_msg_queues(xorriso,0);
 sprintf(xorriso->info_text, "Formatting done\n");
 Xorriso_info(xorriso,0);
 return(1);
}


int Xorriso_node_from_path(struct XorrisO *xorriso, struct iso_volume *volume,
                           char *path, struct iso_tree_node **node, int flag)
{
 char sfe[5*SfileadrL];

 *node= iso_tree_volume_path_to_node(volume, path);
 Xorriso_process_msg_queues(xorriso,0);
 if(*node==NULL) {
   sprintf(xorriso->info_text, "Cannot find path %s in loaded ISO image",
           Text_shellsafe(path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }
 return(1);
}


/* @param boss_iter  If not NULL then this is an iterator suitable for
               iso_tree_node_remove_iter() which is then to be used instead
               of iso_tree_node_remove().
   @param flag bit0= remove whole sub tree: rm -r
               bit1= remove empty directory: rmdir  
               bit2= recursion: do not reassure in mode 2 "tree"
               bit3= this is for overwriting and not for plain removal
   @return   <=0 = error
               1 = removed simple node 
               2 = removed directory or tree
               3 = did not remove on user revocation
*/
int Xorriso_rmi(struct XorrisO *xorriso, void *boss_iter,
                char *path, int flag)
{
 int ret, is_dir= 0, pl, not_removed= 0, fret;
 struct iso_tree_node *victim_node, *node;
 struct iso_tree_node_dir *boss_node, *root_dir;
 struct iso_tree_iter *iter= NULL;
 struct iso_volume *volume;
 char *sub_name, *name;

#ifdef Xorriso_fat_local_meM
 char sfe[5*SfileadrL], sub_path[2*SfileadrL];
#else
 char *sfe= NULL, *sub_path= NULL;

 /* Avoiding large local memory objects in order to save stack space */
 sfe= malloc(5*SfileadrL);
 sub_path= malloc(2*SfileadrL);
 if(sfe==NULL || sub_path==NULL) {
   Xorriso_no_malloc_memory(xorriso, &sfe, 0);
   {ret= -1; goto ex;}
 }
#endif /* ! Xorriso_fat_local_meM */

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   goto ex;
 
 if(Xorriso_much_too_long(xorriso, strlen(path), 0)<=0)
   {ret= 0; goto ex;}
 ret= Xorriso_node_from_path(xorriso, volume, path, &victim_node, 0);
 if(ret<=0)
   goto ex;
 root_dir= iso_volume_get_root(volume);
 if(((void *) root_dir) == ((void *) victim_node)) {
   sprintf(xorriso->info_text, "May not delete root directory");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   {ret= 0; goto ex;}
 }

 if(LIBISO_ISDIR(victim_node))
   is_dir= 1;
 if(!is_dir) {
   if(flag&2) { /* rmdir */
     sprintf(xorriso->info_text, "%s in loaded ISO image is not a directory",
             Text_shellsafe(path, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
     ret= 0; goto ex;
   }
 } else {
   if(flag&1) { /* rm -r */
     if(xorriso->do_reassure==1 && !xorriso->request_not_to_ask) {
       /* Iterate over subordinates and delete them */
       /* this might become standard if access permissions get respected */

       iter= iso_tree_node_children((struct iso_tree_node_dir *) victim_node);
       Xorriso_process_msg_queues(xorriso,0);
       pl= strlen(path);
       strcpy(sub_path, path);
       if(pl==0 || sub_path[pl-1]!='/') {
         sub_path[pl++]= '/';
         sub_path[pl]= 0;
       }
       sub_name= sub_path+pl;
       while((node= iso_tree_iter_next(iter)) != NULL
              && !xorriso->request_to_abort) {
         name= (char *) iso_tree_node_get_name(node);
         if(Xorriso_much_too_long(xorriso, pl+1+strlen(name), 0)<=0)
           {ret= 0; goto rm_r_problem_handler;}
         strcpy(sub_name, name);
         ret= Xorriso_rmi(xorriso, iter, sub_path, (flag&(1|2|8))|4);
         if(ret==3 || ret<=0 || xorriso->request_to_abort) {
rm_r_problem_handler:;
           not_removed= 1;
           fret= Xorriso_eval_problem_status(xorriso, ret, 1|2);
           if(fret<0)
             goto dir_not_removed;
         }
       }
       if(not_removed) {
dir_not_removed:;
         sprintf(xorriso->info_text, "Directory not removed: %s",
                 Text_shellsafe(path, sfe, 0));
         Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
         if(ret>0)
           ret= 3;
         goto ex;
       }
     }
   } else {
     if(!(flag&2)) { /* not rmdir */
       sprintf(xorriso->info_text, "%s in loaded ISO image is a directory",
               Text_shellsafe(path, sfe, 0));
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       ret= 0; goto ex;
     }

     iter= iso_tree_node_children((struct iso_tree_node_dir *) victim_node);
     Xorriso_process_msg_queues(xorriso,0);
     if(iso_tree_iter_next(iter)!=NULL) {
       sprintf(xorriso->info_text,
               "Directory not empty on attempt to delete: %s",
               Text_shellsafe(path, sfe, 0));
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       ret= 0; goto ex;
     }
   }
 }

 if(xorriso->request_to_abort)
   {ret= 3; goto ex;}

 boss_node= iso_tree_node_get_parent(victim_node);
 Xorriso_process_msg_queues(xorriso,0);
 if(boss_node==NULL) {
   sprintf(xorriso->info_text,
           "Cannot find parent node of %s in loaded ISO image",
           Text_shellsafe(path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   ret= 0; goto ex;
 }

 while((xorriso->do_reassure==1 || (xorriso->do_reassure==2 && !(flag&4)))
       && !xorriso->request_not_to_ask) {
   /* ls -ld */
   Xorriso_ls_filev(xorriso, xorriso->wdi, 1, &path, (off_t) 0, 1|2|8);
   if(is_dir) /* du -s */
     Xorriso_ls_filev(xorriso, xorriso->wdi, 1, &path, (off_t) 0, 2|4);
   if(flag&8)
     sprintf(xorriso->info_text,
  "File exists. Remove ?  n= keep old, y= remove, x= abort, @= stop asking\n");
   else
     sprintf(xorriso->info_text,
  "Remove above file ?  n= keep it, y= remove it, x= abort, @= stop asking\n");
   Xorriso_info(xorriso, 4);
   ret= Xorriso_request_confirmation(xorriso, 1|2|4|16);
   if(ret<=0)
     goto ex;
   if(xorriso->request_to_abort) {
     sprintf(xorriso->info_text,
             "Removal operation aborted by user before file: %s",
             Text_shellsafe(path, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     ret= 3; goto ex;
   }
   if(ret==3)
 continue;
   if(ret==6) /* yes */
 break;
   if(ret==4) { /* yes, do not ask again */
     xorriso->request_not_to_ask= 1;
 break;
   }
   if(ret==1) { /* no */
     sprintf(xorriso->info_text, "Kept in existing state: %s",
             Text_shellsafe(path, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     ret= 3; goto ex;
   }
 }

 if(boss_iter!=NULL) {
   ret= iso_tree_node_remove_iter((struct iso_tree_iter *) boss_iter);
   if(ret<0)
     ret= -1;
 } else
   ret= iso_tree_node_remove(boss_node, victim_node);
 Xorriso_process_msg_queues(xorriso,0);
 if(ret==-1) {
   sprintf(xorriso->info_text,
           "Internal failure to remove %s from loaded ISO image",
           Text_shellsafe(path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   ret= -1; goto ex;
 }
 xorriso->volset_change_pending= 1;
 ret= 1+!!is_dir;
ex:;

#ifndef Xorriso_fat_local_meM
 if(sfe!=NULL)
   free(sfe);
 if(sub_path!=NULL)
   free(sub_path);
#endif /* ! Xorriso_fat_local_meM */

 if(iter!=NULL)
   iso_tree_iter_free(iter);
 return(ret);
} 


int Xorriso__node_name_cmp(const void *node1, const void *node2)
{
 char *name1, *name2;

 name1= (char *) iso_tree_node_get_name(*((struct iso_tree_node **) node1));
 name2= (char *) iso_tree_node_get_name(*((struct iso_tree_node **) node2));
 return(strcmp(name1,name2));
}


/* @param flag bit0= only accept directory nodes
               bit1= do not report memory usage as DEBUG
               bit2= do not apply search pattern but accept any node
*/
int Xorriso_sorted_node_array(struct XorrisO *xorriso, 
                              struct iso_tree_node_dir *dir_node,
                              int *nodec, struct iso_tree_node ***node_array,
                              off_t boss_mem, int flag)
{
 int i, ret, failed_at;
 char *npt;
 struct iso_tree_iter *iter= NULL;
 struct iso_tree_node *node;
 off_t mem;

 mem= ((*nodec)+1)*sizeof(struct iso_tree_node *);
 ret= Xorriso_check_temp_mem_limit(xorriso, mem+boss_mem, flag&2);
 if(ret<=0)
   return(ret);

 *node_array= calloc(sizeof(struct iso_tree_node *), (*nodec)+1);
 if(*node_array==NULL) {
   sprintf(xorriso->info_text,
           "Cannot allocate memory for %d directory entries", *nodec); 
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(-1);
 }

 iter= iso_tree_node_children(dir_node);
 for(i= 0; (node= iso_tree_iter_next(iter)) != NULL && i<*nodec; ) {
   npt= (char *) iso_tree_node_get_name(node);
   if(!(flag&4)) {
     ret= Xorriso_regexec(xorriso, npt, &failed_at, 0);
     if(ret)
 continue; /* no match */
   }
   if(flag&1)
     if(!LIBISO_ISDIR(node))
 continue;
   (*node_array)[i++]= node;
 }
 *nodec= i;
 if(*nodec<=0)
   return(1);
 qsort(*node_array, *nodec, sizeof(struct iso_tree_node *),
       Xorriso__node_name_cmp);
 return(1);
}


/* @param flag bit0= do not only sum up sizes but also print subdirs
*/
int Xorriso_show_du_subs(struct XorrisO *xorriso,
                      struct iso_tree_node_dir *dir_node,
                      char *abs_path, char *rel_path, off_t *size,
                      off_t boss_mem, int flag)
{
 int i, ret, no_sort= 0, filec= 0, l;
 struct iso_tree_iter *iter= NULL;
 struct iso_tree_node *node, **node_array= NULL;
 char *name;
 off_t sub_size, report_size, mem= 0;

#ifdef Xorriso_fat_local_meM
 char path[SfileadrL], show_path[SfileadrL], sfe[5*SfileadrL];
#else /* Xorriso_fat_local_meM */
 char *path= NULL, *show_path= NULL, *sfe= NULL;

 sfe= malloc(5*SfileadrL);
 path= malloc(SfileadrL);
 show_path= malloc(SfileadrL);
 if(path==NULL || show_path==NULL || sfe==NULL) {
   Xorriso_no_malloc_memory(xorriso, &sfe, 0);
   {ret= -1; goto ex;}
 }

#endif /* ! Xorriso_fat_local_meM */

 *size= 0;
 iter= iso_tree_node_children(dir_node);
 if(iter==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text, "Cannot obtain ISO directory iterator");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 for(i= 0; (node= iso_tree_iter_next(iter)) != NULL; ) {
   sub_size= 0;
   name= (char *) iso_tree_node_get_name(node);
   strcpy(show_path, rel_path);
   if(Sfile_add_to_path(show_path, name, 0)<=0)
       goto much_too_long;
   if(LIBISO_ISDIR(node)) {
     strcpy(path, abs_path);
     if(Sfile_add_to_path(path, name, 0)<=0) {
much_too_long:;
       Xorriso_much_too_long(xorriso, strlen(path)+strlen(name)+1, 2);
       {ret= -1; goto ex;}
     }
     filec++;
     l= strlen(rel_path)+1;
     mem+= l;
     if(l % sizeof(char *))
       mem+= sizeof(char *)-(l % sizeof(char *));
     if(flag&1) /* diving and counting is done further below */
 continue;
     ret= Xorriso_show_du_subs(xorriso, (struct iso_tree_node_dir *) node,
                               path, show_path, &sub_size, boss_mem, 0);
     if(ret<0)
       goto ex;
     if(ret==0)
 continue;
   }
/*
   sub_size+= iso_tree_node_get_size(node)+strlen(name)+1;
*/
   sub_size+= iso_tree_node_get_size(node)+2048;
   if(sub_size>0)
     (*size)+= sub_size;
   Xorriso_process_msg_queues(xorriso,0);
 }

 if(filec<=0 || !(flag&1))
   {ret= 1; goto ex;}

 /* Reset iteration */
 iso_tree_iter_free(iter);
 iter= NULL;
 Xorriso_process_msg_queues(xorriso,0);

 ret= Xorriso_sorted_node_array(xorriso, dir_node, &filec, &node_array,
                                boss_mem, 1|2|4);
 if(ret<0)
   goto ex;
 if(ret==0) {
   no_sort= 1;
   iter= iso_tree_node_children(dir_node);
 }

 for(i= 0; (no_sort || i<filec) && !(xorriso->request_to_abort); i++) {
   if(no_sort) {
     node= iso_tree_iter_next(iter);
     if(node==NULL)
 break;
     if(!LIBISO_ISDIR(node))
 continue;
   } else
     node= node_array[i];

   sub_size= 0;
   name= (char *) iso_tree_node_get_name(node);
   strcpy(show_path, rel_path);
   if(Sfile_add_to_path(show_path, name, 0)<=0)
     goto much_too_long;
   strcpy(path, abs_path);
   if(Sfile_add_to_path(path, name, 0)<=0)
     goto much_too_long;
   ret= Xorriso_show_du_subs(xorriso, (struct iso_tree_node_dir *) node,
                             path, show_path, &sub_size, boss_mem+mem, flag&1);
   if(ret<0)
     goto ex;
/*
   sub_size+= iso_tree_node_get_size(node)+strlen(name)+1;
*/
   sub_size+= iso_tree_node_get_size(node)+2048;
   if(sub_size>0)
     (*size)+= sub_size;
   report_size= sub_size/1024;
   if(report_size*1024<sub_size)
      report_size++;
   sprintf(xorriso->result_line, "%7.f ",(double) (report_size));
   sprintf(xorriso->result_line+strlen(xorriso->result_line), "%s\n",
           Text_shellsafe(show_path, sfe, 0));
   Xorriso_result(xorriso, 0);
 }
 ret= 1;
ex:;

#ifndef Xorriso_fat_local_meM
 if(sfe!=NULL)
   free(sfe);
 if(path!=NULL)
   free(path);
 if(show_path!=NULL)
   free(show_path);
#endif /* ! Xorriso_fat_local_meM */

 if(iter!=NULL)
   iso_tree_iter_free(iter);
 if(node_array!=NULL)
   free((char *) node_array);
 Xorriso_process_msg_queues(xorriso,0);
 return(ret);
}


/* @param flag bit0= *node is already valid */
int Xorriso_fake_stbuf(struct XorrisO *xorriso, char *path, struct stat *stbuf,
                       struct iso_tree_node **node, int flag)
{
 int ret;
 struct iso_volume *volume;

 memset((char *) stbuf, 0, sizeof(struct stat));
 if(!(flag&1)) {
   ret= Xorriso_get_volume(xorriso, &volume, 0);
   if(ret<=0)
     return(-1);
   *node= iso_tree_volume_path_to_node(volume,path);
 }
 if(*node==NULL)
   return(0);

 /* >>> stbuf->st_dev */
 /* >>> stbuf->st_ino */

 stbuf->st_mode= iso_tree_node_get_permissions(*node);
 if(LIBISO_ISDIR(*node))
   stbuf->st_mode|= S_IFDIR;
 else if(LIBISO_ISREG(*node))
   stbuf->st_mode|= S_IFREG;
 else if(LIBISO_ISLNK(*node))
   stbuf->st_mode|= S_IFLNK;

 /* >>> With directories this should be : number of subdirs + 2 */
 /* >>> ??? How to obtain RR hardlink number for other types ? */
 stbuf->st_nlink= 1;

 stbuf->st_uid= iso_tree_node_get_uid(*node);
 stbuf->st_gid= iso_tree_node_get_gid(*node);

 /* >>> stbuf->st_rdev */

 stbuf->st_size= iso_tree_node_get_size(*node);

 stbuf->st_blksize= 2048;
 stbuf->st_blocks= stbuf->st_size / (off_t) 2048;
 if(stbuf->st_blocks * (off_t) 2048 != stbuf->st_size)
   stbuf->st_blocks++; 

 stbuf->st_atime= iso_tree_node_get_atime(*node);
 stbuf->st_mtime= iso_tree_node_get_mtime(*node);
 stbuf->st_ctime= iso_tree_node_get_ctime(*node);
 return(1);
}


int Xorriso_sorted_dir_i(struct XorrisO *xorriso, 
                         struct iso_tree_node_dir *dir_node,
                         int *filec, char ***filev, off_t boss_mem, int flag)
{
 int i,j,ret;
 struct iso_tree_iter *iter= NULL;
 struct iso_tree_node *node;
 char *name;
 off_t mem;

 (*filec)= 0;
 (*filev)= NULL;

 iter= iso_tree_node_children(dir_node);
 if(iter==NULL) {
cannot_iter:;
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text, "Cannot obtain ISO directory iterator");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 mem= 0;
 for(i= 0; (node= iso_tree_iter_next(iter)) != NULL; ) {
   name= (char *) iso_tree_node_get_name(node);
   mem+= sizeof(char *)+strlen(name)+8;
   (*filec)++;
 }
 iso_tree_iter_free(iter);
 if(*filec==0)
   {ret= 1; goto ex;}

 ret= Xorriso_check_temp_mem_limit(xorriso, mem+boss_mem, 2);
 if(ret<=0)
   goto ex;
 (*filev)= (char **) calloc(*filec, sizeof(char *));
 if(*filev==NULL)
   {ret= -1; goto ex; }
 iter= iso_tree_node_children(dir_node);
 if(iter==NULL)
   goto cannot_iter;
 for(i= 0; i<*filec; i++) {
   name= (char *) iso_tree_node_get_name(iso_tree_iter_next(iter));
   (*filev)[i]= strdup(name);
   if((*filev)[i]==NULL) {
     for(j= 0; j<i; j++)
       if((*filev)[j]!=NULL)
         free((*filev)[j]);
     free((char *) (*filev));
     ret= -1; goto ex;
   }
 }
 Sort_argv(*filec, *filev, 0);
 ret= 1;
ex:;
 if(iter!=NULL)
   iso_tree_iter_free(iter);
 return(ret);
}


/* @param flag bit0= long format
               bit1= do not print count of nodes
               bit2= du format
               bit3= print directories as themselves (ls -d)
*/
int Xorriso_ls_filev(struct XorrisO *xorriso, char *wd,
                     int filec, char **filev, off_t boss_mem, int flag)
{
 int i, ret, was_error= 0, dfilec= 0, pass, passes;
 struct iso_tree_node *node;
 struct iso_volume *volume;
 char sfe[5*SfileadrL], sfe2[5*SfileadrL], path[SfileadrL];
 char link_target[SfileadrL], *rpt, **dfilev= NULL;
 off_t size;
 struct stat stbuf;

 rpt= xorriso->result_line;

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);

 Sort_argv(filec, filev, 0);

 /* Count valid nodes, warn of invalid ones */
 for(i= 0; i<filec; i++) {
   ret= Xorriso_make_abs_adr(xorriso, wd, filev[i], path, 1|2|4);
   if(ret<=0) {
     was_error++;
 continue;
   }
   node= iso_tree_volume_path_to_node(volume,path);
   if(node==NULL) {
     sprintf(xorriso->info_text, "Not found in ISO image: %s",
             Text_shellsafe(path, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
     was_error++;
 continue;
   }
 }

 if((flag&8) && !(flag&(2|4))) {
   sprintf(xorriso->info_text, "Valid ISO nodes found: %d\n", filec-was_error);
   Xorriso_info(xorriso,1);
   if(filec-was_error<=0)
     return(!was_error);
 }

 passes= 1+!(flag&(4|8));
 for(pass= 0; pass<passes; pass++)
 for(i= 0; i<filec && !(xorriso->request_to_abort); i++) {
   rpt[0]= 0;
   ret= Xorriso_make_abs_adr(xorriso, wd, filev[i], path, 1|2|4);
   if(ret<=0)
 continue;
   ret= Xorriso_fake_stbuf(xorriso, path, &stbuf, &node, 0);
   if(ret<=0)
 continue;
   if(LIBISO_ISDIR(node)  && !(flag&(4|8))) {
     if(pass==0)
 continue;
     if(filec>1) {
       strcpy(xorriso->result_line, "\n");
       Xorriso_result(xorriso,0);
       sprintf(xorriso->result_line, "%s:\n", Text_shellsafe(filev[i], sfe,0));
       Xorriso_result(xorriso,0);
     }
     ret= Xorriso_sorted_dir_i(xorriso, 
             (struct iso_tree_node_dir *) node, &dfilec, &dfilev, boss_mem, 0);
     if(ret<=0) {

       /* >>> libisofs iterator loop and single item Xorriso_lsx_filev() */;

     } else {
       if(flag&1) {
         sprintf(xorriso->result_line, "total %d\n", dfilec);
         Xorriso_result(xorriso,0);
       }
       Xorriso_ls_filev(xorriso, path,
                        dfilec, dfilev, boss_mem, (flag&1)|2|8);
     }
     if(dfilec>0)
       Sfile_destroy_argv(&dfilec, &dfilev, 0);
 continue;
   } else
     if(pass>0)
 continue;
   link_target[0]= 0;
   if((flag&5)==1) { /* -ls_l */
     ret= Xorriso_format_ls_l(xorriso, &stbuf, 0);
     if(ret<=0)
 continue;
     if(LIBISO_ISLNK(node)) {
       if(Sfile_str(link_target, (char *) iso_tree_node_symlink_get_dest(
                                 (struct iso_tree_node_symlink *) node), 0)<=0)
         link_target[0]= 0;
     }
   } else if(flag&4) { /* -du or -dus */
     size= stbuf.st_size;
     if(S_ISDIR(stbuf.st_mode)) {
       ret= Xorriso_show_du_subs(xorriso, (struct iso_tree_node_dir *) node,
                                 path, filev[i], &size, boss_mem, flag&1);
       if(ret<0)
         return(-1);
       if(ret==0)
 continue;
     }
     sprintf(rpt, "%7.f ",(double) (size/1024));
   }
   if(link_target[0] && (flag&5)==1)
     sprintf(xorriso->result_line+strlen(xorriso->result_line), "%s -> %s\n",
             Text_shellsafe(filev[i], sfe, 0),
             Text_shellsafe(link_target, sfe2, 0));
   else
     sprintf(xorriso->result_line+strlen(xorriso->result_line), "%s\n",
             Text_shellsafe(filev[i], sfe, 0));
   Xorriso_result(xorriso, 0);
 }
 return(!was_error);
}


/* This function needs less buffer memory than Xorriso_ls_filev() but cannot
   perform structured pattern matching as done by Xorriso_expand_pattern()
   for subsequent Xorriso_ls_filev().
   @param flag bit0= long format
               bit1= only check for directory existence
               bit2= do not apply search pattern but accept any file
*/
int Xorriso_ls(struct XorrisO *xorriso, int flag)
{
 int ret, is_dir= 0, i, filec= 0, failed_at, no_sort= 0;
 struct iso_tree_node *node, **node_array= NULL;
 struct iso_tree_node_dir *dir_node;
 struct iso_volume *volume;
 struct iso_tree_iter *iter= NULL;
 char sfe[5*SfileadrL], sfe2[5*SfileadrL], link_target[SfileadrL], *npt, *rpt;
 struct stat stbuf;

 rpt= xorriso->result_line;

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);

 ret= Xorriso_node_from_path(xorriso, volume, xorriso->wdi, &node, 0);
 if(ret<=0)
   goto wdi_is_not_a_dir;
 if(LIBISO_ISDIR(node))
   is_dir= 1;
 if(!is_dir) {
wdi_is_not_a_dir:;
   sprintf(xorriso->info_text,
           "Working directory path does not lead to a directory in ISO image"); 
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   ret= 0; goto ex;
 }
 if(flag&2)
   {ret= 1; goto ex;}

 dir_node= (struct iso_tree_node_dir *) node;
 iter= iso_tree_node_children(dir_node);
 Xorriso_process_msg_queues(xorriso,0);

 for(i= 0; (node= iso_tree_iter_next(iter)) != NULL; ) {
   npt= (char *) iso_tree_node_get_name(node);
   if(!(flag&4)) {
     ret= Xorriso_regexec(xorriso, npt, &failed_at, 0);
     if(ret)
 continue; /* no match */
   }
   filec++;
 }
 /* Reset iteration */
 iso_tree_iter_free(iter);
 iter= NULL;
 Xorriso_process_msg_queues(xorriso,0);

 sprintf(xorriso->info_text, "Valid ISO nodes found: %d\n", filec);
 Xorriso_info(xorriso,1);

 ret= Xorriso_sorted_node_array(xorriso, dir_node, &filec, &node_array, 0,
                                flag&4);
 if(ret<0)
   goto ex;
 if(ret==0) {
   no_sort= 1;
   iter= iso_tree_node_children(dir_node);
 }

 for(i= 0; i<filec && !(xorriso->request_to_abort); i++) {
   if(no_sort) {
     node= iso_tree_iter_next(iter);
     if(node==NULL)
 break;
     npt= (char *) iso_tree_node_get_name(node);
     if(!(flag&4)) {
       ret= Xorriso_regexec(xorriso, npt, &failed_at, 0);
       if(ret)
 continue; /* no match */
     }
   } else
     node= node_array[i];

   npt= (char *) iso_tree_node_get_name(node);
   link_target[0]= 0;
   if(LIBISO_ISLNK(node)) {
     if(Sfile_str(link_target, (char *) iso_tree_node_symlink_get_dest(
                                 (struct iso_tree_node_symlink *) node), 0)<=0)
       link_target[0]= 0;
   }
   rpt[0]= 0;
   if(flag&1) {
     ret= Xorriso_fake_stbuf(xorriso, "", &stbuf, &node, 1);
     if(ret<=0)
 continue;
     ret= Xorriso_format_ls_l(xorriso, &stbuf, 0);
     if(ret<=0)
 continue;
   }
   if(link_target[0] && (flag&1))
     sprintf(xorriso->result_line+strlen(xorriso->result_line), "%s -> %s\n",
             Text_shellsafe(npt, sfe, 0), 
             Text_shellsafe(link_target, sfe2, 0));
   else
     sprintf(xorriso->result_line+strlen(xorriso->result_line), "%s\n",
             Text_shellsafe(npt, sfe, 0));
   Xorriso_result(xorriso, 0);
 }

 ret= 1;
ex:;
 if(iter!=NULL)
   iso_tree_iter_free(iter);
 Xorriso_process_msg_queues(xorriso,0);
 if(node_array!=NULL)
   free((char *) node_array);
 return(1);
}


int Xorriso_rename(struct XorrisO *xorriso, char *origin, char *dest, int flag)
{
 int ret, ol, dest_ret;
 char sfe[5*SfileadrL], eff_dest[SfileadrL], dir_adr[SfileadrL], *cpt;
 char *leafname, eff_origin[SfileadrL], sfe2[5*SfileadrL];
 struct iso_volume *volume;
 struct iso_tree_node_dir *origin_dir, *dest_dir;
 struct iso_tree_node *node;

 ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, origin, eff_origin, 0);
 if(ret<=0)
   return(ret);
 dest_ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, dest, eff_dest,1);
 if(dest_ret<0)
   return(dest_ret);
 if(dest_ret==0) { /* obtain eff_dest address despite it does not exist */
   ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, dest, eff_dest, 2);
   if(ret<=0)
     return(ret);
 }

 /* Prevent that destination is a subordinate of origin
    (that would be a black hole plopping out of the universe) */
 ol= strlen(eff_origin);
 if(ol==0) {
   sprintf(xorriso->info_text, "May not rename root directory");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 } else if(strcmp(eff_origin, eff_dest)==0) {
   sprintf(xorriso->info_text, "Ignored attempt to rename %s to itself",
           Text_shellsafe(eff_origin,sfe,0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
   return(0);
 } else if(strncmp(eff_origin, eff_dest, ol)==0 &&
           (eff_dest[ol]==0 || eff_dest[ol]=='/')) {
   sprintf(xorriso->info_text,
           "May not rename %s to its own sub address %s",
           Text_shellsafe(eff_origin,sfe,0), Text_shellsafe(eff_dest,sfe2,0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 }

 /* Check whether destination exists and may be not overwriteable */
 if(dest_ret==2 && xorriso->do_overwrite!=1) {
   sprintf(xorriso->info_text, "Renaming may not overwrite directory: %s",
           Text_shellsafe(eff_dest, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 } else if (dest_ret==1 && !xorriso->do_overwrite) {
   sprintf(xorriso->info_text, "Renaming may not overwite: %s",
           Text_shellsafe(eff_dest, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
   return(0);
 } else if(dest_ret>0) {
   ret= Xorriso_rmi(xorriso, NULL, eff_dest, 1|8);
   if(ret<=0)
     return(0);
   if(ret==3) {
     sprintf(xorriso->info_text, "User revoked renaming of: %s",
             Text_shellsafe(eff_origin, sfe, 0));
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     return(0);
   }
 }

 /* Ensure existence of destination directory */
 strcpy(dir_adr, eff_dest);
 cpt= strrchr(dir_adr, '/');
 if(cpt==NULL)
   cpt= dir_adr+strlen(dir_adr);
 *cpt= 0;
 if(dir_adr[0]!=0) {
   ret= Xorriso_graft_in(xorriso, NULL, dir_adr, 1);
   if(ret<=0)
     return(ret);
 }

 /* Move node */
 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);
 dest_dir= (struct iso_tree_node_dir *)
       iso_tree_volume_path_to_node(volume,dir_adr);
 strcpy(dir_adr, eff_origin);
 cpt= strrchr(dir_adr, '/');
 if(cpt==NULL)
   cpt= dir_adr+strlen(dir_adr);
 *cpt= 0;
 origin_dir= (struct iso_tree_node_dir *)
      iso_tree_volume_path_to_node(volume,dir_adr);
 node= iso_tree_volume_path_to_node(volume,eff_origin);
 if(dest_dir==NULL || origin_dir==NULL || node==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,
           "Internal error on rename: confirmed node turns out as NULL");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(-1);
 }
 ret= iso_tree_node_take(origin_dir, node);
 if(ret==-1) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,
           "Internal error on rename: failed to take node");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   return(-1);
 }
 iso_tree_add_child(dest_dir, node);
 leafname= strrchr(eff_dest, '/');
 if(leafname==NULL)
   leafname= eff_dest;
 else
   leafname++;
 iso_tree_node_set_name(node, leafname);

 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


/* @param flag bit0= do not produce info message on success
   @return 1=success,
           0=was already directory, -1=was other type, -2=other error
*/
int Xorriso_mkdir(struct XorrisO *xorriso, char *path, int flag)
{
 int ret;
 char eff_path[SfileadrL], sfe[5*SfileadrL];

 ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, path, eff_path, 1);
 if(ret<0)
   return(-2);
 if(ret>0) {
   sprintf(xorriso->info_text,"-mkdir: Address already existing %s",
          Text_shellsafe(eff_path, sfe, 0));
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0,
                       (ret==2 ? "WARNING" : "SORRY"), 0);
   return(-1+(ret==2));
 }
 ret= Xorriso_normalize_img_path(xorriso, xorriso->wdi, path, eff_path, 2);
 if(ret<0)
   return(-2);
 ret= Xorriso_graft_in(xorriso, NULL, eff_path, 1);
 if(ret<=0)
   return(-2);
 if(!(flag&1)) {
   sprintf(xorriso->info_text, "Created directory in ISO image: %s\n",
           Text_shellsafe(eff_path,sfe,0));
   Xorriso_info(xorriso, 0);
 }
 return(1);
}


/* @param flag bit0= count results rather than storing them
               bit1= this is a recursion
               bit2= prepend wd (automatically done if wd[0]!=0)
*/
int Xorriso_obtain_pattern_files_i(
       struct XorrisO *xorriso, char *wd, struct iso_tree_node_dir *dir,
       int *filec, char **filev, int count_limit, off_t *mem,
       int *dive_count, int flag)
{
 int ret, failed_at;
 struct iso_tree_iter *iter= NULL;
 struct iso_tree_node *node;
 char *name;

#ifdef Xorriso_fat_local_meM
 char adr[SfileadrL];
#else /* Xorriso_fat_local_meM */
 char *adr= NULL;

 adr= malloc(SfileadrL);
 if(adr==NULL) {
   Xorriso_no_malloc_memory(xorriso, &adr, 0);
   {ret= -1; goto ex;}
 }
#endif /* ! Xorriso_fat_local_meM */


 if(!(flag&2))
   *dive_count= 0;
 else
   (*dive_count)++;
 ret= Xorriso_check_for_root_pattern(xorriso, filec, filev, count_limit,
                                     mem, (flag&1)|2);
 if(ret!=2)
   goto ex;

 iter= iso_tree_node_children(dir);
 if(iter==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text, "Cannot obtain ISO directory iterator");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 while((node= iso_tree_iter_next(iter)) != NULL) {
   name= (char *) iso_tree_node_get_name(node);
   ret= Xorriso_make_abs_adr(xorriso, wd, name, adr, flag&4);
   if(ret<=0)
     goto ex;
   ret= Xorriso_regexec(xorriso, adr, &failed_at, 1);
   if(ret) { /* no match */
     if(failed_at <= *dive_count) /* no hope for a match */
 continue;

     if(!LIBISO_ISDIR(node)) {

       /* >>> How to deal with softlinks ? */

 continue;
     }
     /* dive deeper */
     ret= Xorriso_obtain_pattern_files_i(
                          xorriso, adr, (struct iso_tree_node_dir *) node,
                          filec, filev, count_limit, mem, dive_count, flag|2);
     if(ret<=0)
       goto ex;
   } else {
     ret= Xorriso_register_matched_adr(xorriso, adr, count_limit,
                                       filec, filev, mem, (flag&1)|2);
     if(ret<=0)
       goto ex;
   }
 } 
 ret= 1;
ex:;

#ifndef Xorriso_fat_local_meM
 if(adr!=NULL)
   free(adr);
#endif /* ! Xorriso_fat_local_meM */

 if(flag&2)
   (*dive_count)--;
 return(ret);
}


/* @param flag bit0= a match count !=1 is a SORRY event
               bit1= with bit0 tolerate 0 matches if pattern is a constant
*/
int Xorriso_expand_pattern(struct XorrisO *xorriso,
                           int num_patterns, char **patterns, int extra_filec,
                           int *filec, char ***filev, off_t *mem, int flag)
{
 int ret, count= 0, abs_adr= 0, i, was_count, was_filec;
 int nonconst_mismatches= 0, dive_count= 0;
 char sfe[5*SfileadrL];
 struct iso_volume *volume;
 struct iso_tree_node_dir *dir= NULL, *root_dir;

 *filec= 0;
 *filev= NULL;

 xorriso->search_mode= 3;
 xorriso->structured_search= 1;

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);
 root_dir= iso_volume_get_root(volume);
 if(root_dir==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text,
           "While expanding pattern : Cannot obtain root node of ISO image");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   ret= -1; goto ex;
 }

 for(i= 0; i<num_patterns; i++) {
   ret=  Xorriso_prepare_expansion_pattern(xorriso, patterns[i], 0);
   if(ret<=0)
     return(ret);
   if(ret==2)
     abs_adr= 4;
   if(patterns[i][0]=='/' || abs_adr) {
     dir= root_dir;
     abs_adr= 4;
   } else {
     /* This is done so late to allow the following:
        It is not an error if xorriso->wdi does not exist yet, but one may
        not use it as base for relative address searches.
     */
     dir= (struct iso_tree_node_dir *)
          iso_tree_volume_path_to_node(volume,xorriso->wdi);
     if(dir==NULL) {
       Xorriso_process_msg_queues(xorriso,0);
       sprintf(xorriso->info_text,
  "While expanding pattern %s : Working directory does not exist in ISO image",
               Text_shellsafe(patterns[i], sfe, 0));
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       ret= 0; goto ex;
     }
     if(!LIBISO_ISDIR((struct iso_tree_node *) dir)) {
       sprintf(xorriso->info_text,
           "Working directory path does not lead to a directory in ISO image");
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       ret= 0; goto ex;
     }
   }

   /* count the matches */
   was_count= count;
   ret= Xorriso_obtain_pattern_files_i(xorriso, "", dir, &count, NULL, 0,
                                       mem, &dive_count, 1 | abs_adr);
   if(ret<=0)
     goto ex;
   if(was_count==count && strcmp(patterns[i],"*")!=0 && (flag&3)!=1) {
     count++;
     Xorriso_eval_nonmatch(xorriso, patterns[i], &nonconst_mismatches, mem, 0);
   }
 }

 ret= Xorriso_check_matchcount(xorriso, count, nonconst_mismatches,
                               num_patterns, patterns, flag&1);
 if(ret<=0)
   goto ex;
 count+= extra_filec;
 mem+= extra_filec*sizeof(char *);
 if(count<=0)
   {ret= 0; goto ex;}
 ret= Xorriso_alloc_pattern_mem(xorriso, *mem, count, filev, 0);
 if(ret<=0)
   goto ex;
 /* now store addresses */
 for(i= 0; i<num_patterns; i++) {
   ret=  Xorriso_prepare_expansion_pattern(xorriso, patterns[i], 0);
   if(ret<=0)
     return(ret);
   if(ret==2)
     abs_adr= 4;

   was_filec= *filec;
   ret= Xorriso_obtain_pattern_files_i(xorriso, "", dir, filec, *filev, count,
                                       mem, &dive_count, abs_adr);
   if(ret<=0)
     goto ex;
   if(was_filec == *filec && strcmp(patterns[i],"*")!=0) {
     (*filev)[*filec]= strdup(patterns[i]);
     if((*filev)[*filec]==NULL) {
       (*mem)= strlen(patterns[i])+1;
       Xorriso_no_pattern_memory(xorriso, *mem, 0);
       ret= -1; goto ex;
     }
     (*filec)++;
   } 
 }
 ret= 1;
ex:;
 if(ret<=0) {
   if(filev!=NULL)
     Sfile_destroy_argv(&count, filev, 0);
   *filec= 0;
 }
 return(ret);
}


int Xorriso_set_st_mode(struct XorrisO *xorriso, char *in_path,
                        mode_t mode_and, mode_t mode_or, int flag)
{
 mode_t mode= 0;
 int ret;
 struct iso_tree_node *node;
 char sfe[5*SfileadrL], path[SfileadrL];

 ret= Xorriso_get_node_by_path(xorriso, in_path, path, &node, 0);
 if(ret<=0)
   return(ret);
 mode= iso_tree_node_get_permissions(node);
 mode= (mode & mode_and) | mode_or;
 iso_tree_node_set_permissions(node, mode);
 iso_tree_node_set_ctime(node, time(NULL));
 sprintf(xorriso->info_text,"Permissions now: %-5.5o  %s",
         mode, Text_shellsafe(path, sfe, 0));
 Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "DEBUG", 0);
 xorriso->volset_change_pending= 1;
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_set_uid(struct XorrisO *xorriso, char *in_path, uid_t uid,
                    int flag)
{
 int ret;
 struct iso_tree_node *node;

 ret= Xorriso_get_node_by_path(xorriso, in_path, NULL, &node, 0);
 if(ret<=0)
   return(ret);
 iso_tree_node_set_uid(node, uid);
 iso_tree_node_set_ctime(node, time(NULL));
 xorriso->volset_change_pending= 1;
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_set_gid(struct XorrisO *xorriso, char *in_path, gid_t gid,
                    int flag)
{
 int ret;
 struct iso_tree_node *node;

 ret= Xorriso_get_node_by_path(xorriso, in_path, NULL, &node, 0);
 if(ret<=0)
   return(ret);
 iso_tree_node_set_gid(node, gid);
 iso_tree_node_set_ctime(node, time(NULL));
 xorriso->volset_change_pending= 1;
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


/* @parm flag  bit0= atime, bit1= ctime, bit2= mtime, bit8=no auto ctime */
int Xorriso_set_time(struct XorrisO *xorriso, char *in_path, time_t t,
                    int flag)
{
 int ret;
 struct iso_tree_node *node;

 ret= Xorriso_get_node_by_path(xorriso, in_path, NULL, &node, 0);
 if(ret<=0)
   return(ret);
 if(flag&1)
   iso_tree_node_set_atime(node, t);
 if(flag&2)
   iso_tree_node_set_ctime(node, t);
 if(flag&4)
   iso_tree_node_set_mtime(node, t);
 if(!(flag&(2|256)))
   iso_tree_node_set_ctime(node, time(NULL));
 xorriso->volset_change_pending= 1;
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_findi_action(struct XorrisO *xorriso, struct FindjoB *job,
                         char *abs_path, char *show_path, 
                         struct iso_tree_node *node, int depth, int flag)
{
 int ret, type, action= 0;
 uid_t user= 0;
 gid_t group= 0;
 time_t date= 0;
 mode_t mode_or= 0, mode_and= ~1;
 char *target, sfe[5*SfileadrL];
 struct FindjoB *subjob;
 struct stat dir_stbuf;

 action= Findjob_get_action_parms(job, &target, &user, &group,
                                &mode_and, &mode_or, &type, &date, &subjob, 0);
 if(action<0)
   action= 0;

 if(action==1) {
   /* >>> rm */;
 } else if(action==2) {

   /* >>> rm_r */;

 } else if(action==3) {

   /* >>> mv target */;

 } else if(action==4) { /* chown */
   ret= Xorriso_set_uid(xorriso, abs_path, user, 0);
 } else if(action==5) { /* chgrp */
   ret= Xorriso_set_gid(xorriso, abs_path, group, 0);
 } else if(action==6) { /* chmod */
   ret= Xorriso_set_st_mode(xorriso, abs_path, mode_and, mode_or, 0);
 } else if(action==7) { /* alter_date */
   ret= Xorriso_set_time(xorriso, abs_path, date, type&7);
 } else if(action==8) { /* lsdl */
   ret= Xorriso_ls_filev(xorriso, "", 1, &abs_path, (off_t) 0, 1|2|8);
 } else if(action>=9 && action<=13) { /* actions which have own findjobs */
   Findjob_set_start_path(subjob, abs_path, 0);
   ret= Xorriso_findi(xorriso, subjob, NULL, abs_path, &dir_stbuf, depth, 0);
 } else {
   sprintf(xorriso->result_line, "%s\n", Text_shellsafe(show_path, sfe, 0));
   Xorriso_result(xorriso, 0);
   ret= 1;
 }
 return(ret);
}


int Xorriso_findi(struct XorrisO *xorriso, struct FindjoB *job,
                  void *dir_node_generic, char *dir_path,
                  struct stat *dir_stbuf, int depth, int flag)
{
 int ret, action= 0;
 struct iso_tree_iter *iter= NULL;
 struct iso_tree_node_dir *dir_node;
 struct iso_tree_node *node;
 struct iso_volume *volume;
 struct stat stbuf;
 char *name;
#ifdef Xorriso_fat_local_meM
 char path[SfileadrL], sfe[5*SfileadrL];
#else /* Xorriso_fat_local_meM */
 char *path= NULL, *sfe= NULL, *abs_path= NULL;

 sfe= malloc(5*SfileadrL);
 path= malloc(SfileadrL);
 abs_path= malloc(SfileadrL);
 if(sfe==NULL || path==NULL || abs_path==NULL) {
   Xorriso_no_malloc_memory(xorriso, &sfe, 0);
   {ret= -1; goto ex;}
 }
#endif /* ! Xorriso_fat_local_meM */

 action= Findjob_get_action(job, 0);
 if(action<0)
   action= 0;

 dir_node= (struct iso_tree_node_dir *) dir_node_generic;
 if(dir_node==NULL) {
   ret= Xorriso_get_volume(xorriso, &volume, 0);
   if(ret<=0)
     {ret= -1; goto ex;}
   ret= Xorriso_make_abs_adr(xorriso, xorriso->wdi, dir_path, path, 1|2|4);
   if(ret<=0)
     goto ex;
   dir_node= (struct iso_tree_node_dir *)
             iso_tree_volume_path_to_node(volume, path);
   if(dir_node==NULL)
     {ret= 0; goto ex;}
   ret= Xorriso_fake_stbuf(xorriso, "", dir_stbuf,
                           (struct iso_tree_node **) &dir_node, 1);
   if(ret<=0)
     goto ex;

   name= strrchr(dir_path, '/');
   if(name==NULL)
     name= dir_path;
   else
     name++;
   ret= Findjob_test(job, name, NULL, dir_stbuf, depth, 0);
   if(ret<0)
     goto ex;
   if(ret>0) {
     ret= Xorriso_findi_action(xorriso, job, path, dir_path, 
                               (struct iso_tree_node *) dir_node, depth, 0);
     if(ret<=0)
       goto ex;
   }
 }
 if(!LIBISO_ISDIR((struct iso_tree_node *) dir_node))
   {ret= 2; goto ex;}

 iter= iso_tree_node_children(dir_node);
 if(iter==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   sprintf(xorriso->info_text, "Cannot obtain ISO directory iterator");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 while((node= iso_tree_iter_next(iter)) != NULL && !xorriso->request_to_abort){
   name= (char *) iso_tree_node_get_name(node);
   ret= Xorriso_make_abs_adr(xorriso, dir_path, name, path, 4);
   if(ret<=0)
     goto ex;
   ret= Xorriso_fake_stbuf(xorriso, "", &stbuf, &node, 1);
   if(ret<0)
     goto ex;
   if(ret==0)
 continue;

   ret= Findjob_test(job, name, dir_stbuf, &stbuf, depth, 0);
   if(ret<0)
     goto ex;
   if(ret>0) {

#ifdef NIX
     sprintf(xorriso->result_line, "%s\n", Text_shellsafe(path, sfe, 0));
     Xorriso_result(xorriso, 0);
#else
     ret= Xorriso_make_abs_adr(xorriso, xorriso->wdi, path, abs_path, 1|4);
     if(ret<=0)
       goto ex;
     ret= Xorriso_findi_action(xorriso, job, abs_path, path, node, depth, 0);
     if(ret<=0) {
       if(Xorriso_eval_problem_status(xorriso, ret, 1|2)<0)
         goto ex;
     }
#endif /* ! NIX */

   }

   if(S_ISDIR(stbuf.st_mode)) {
     ret= Xorriso_findi(xorriso, job, (void *) node, path,
                        &stbuf, depth+1, flag);
     if(ret<0)
       goto ex;
   }
 }

 ret= 1;
ex:;

#ifndef Xorriso_fat_local_meM
 if(sfe!=NULL)
   free(sfe);
 if(path!=NULL)
   free(path);
 if(abs_path!=NULL)
   free(abs_path);
#endif /* ! Xorriso_fat_local_meM */

 Xorriso_process_msg_queues(xorriso,0);
 if(iter!=NULL)
   iso_tree_iter_free(iter);
 return(ret);
}


int Xorriso_set_volid(struct XorrisO *xorriso, char *volid, int flag)
{
 int ret;
 struct iso_volume *volume;

 ret= Xorriso_get_volume(xorriso, &volume, 0);
 if(ret<=0)
   return(ret);
 iso_volume_set_volume_id(volume, volid);
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_get_volid(struct XorrisO *xorriso, char volid[33], int flag)
{
 /*  OG dummy */;
 volid[0]= 0;
 return(1);
}